My cat is addicted to s3x?

So I recently bought a male tabby cat and everything seemed fine until one night he walked back into the house from one of his daily neighborhood meandering covered in s3men and cat saliva so the only logical assumption was that he was going around banging other cats so I set up a security camera in te neighborhood to monitor and sure enlightened he was going Into old lady geromina's back yard and having a cat orgy with all those slutty female Siamese felinuses so how do I make him less h0rny?